scenic-build

bySangeeta Goyal

Build a fully functional SaaS web application called "Nutreador AI" — an automated, AI-powered nutrition tracker and meal planning platform for health-conscious users, students, and fitness enthusiasts. ## CORE FEATURES ### 1. User Authentication & Profiles - Email/password signup + Google OAuth login - User profiles with: name, age, gender, height, weight, activity level, health goals (weight loss, muscle gain, maintenance) - Dietary preferences: vegetarian, vegan, keto, paleo, gluten-free, dairy-free - Allergies/restrictions input (nuts, shellfish, eggs, etc.) - Multi-tenant architecture: each user has isolated data ### 2. AI-Powered Meal Planning Engine - Calculate daily calorie needs using Mifflin-St Jeor equation based on user inputs - Generate personalized 7-day meal plans (breakfast, lunch, dinner, snacks) - Each meal includes: - AI-generated recipe name and description - Full ingredient list with quantities - Step-by-step cooking instructions - Nutritional breakdown (calories, protein, carbs, fats, fiber) - Allow users to regenerate meals they don't like with one click - Support for custom meal requests via natural language (e.g., "I want something high-protein for breakfast under 400 calories") ### 3. Smart Food Photo Analysis - Users can upload photos of their meals - AI analyzes image to identify food items and estimate portion sizes - Auto-calculate calories and macros from photos - Allow manual corrections to improve accuracy over time - Display confidence scores for AI predictions ### 4. Nutrition Dashboard & Tracking - Daily/weekly nutrition summary dashboard - Visual charts showing: - Calories consumed vs. target - Macro distribution (pie chart) - Micronutrient tracking (vitamins, minerals) - Progress toward goals over time - Food logging with quick-add, barcode scan, and search from food database - Integration with USDA/Open Food Facts API for accurate nutrition data - Water intake tracker - Weight tracking with progress graphs ### 5. Smart Grocery Lists - Auto-generate shopping lists from weekly meal plans - Organize by category (produce, dairy, proteins, grains) - Allow manual additions/removals - Export to PDF or send to Instacart/Amazon Fresh (future integration) ### 6. Recipe Library & Customization - Save favorite AI-generated recipes to personal library - Search and filter recipes by: calories, protein, diet type, meal type - AI recipe customization: "Make this recipe lower carb" or "Add more protein" - Community recipe sharing (optional feature for premium tier) ### 7. Insights & Recommendations - AI-powered weekly nutrition reports - Personalized tips based on eating patterns (e.g., "You're low on iron, try adding spinach") - Mood/energy correlation tracking (optional: users log how they feel after meals) - Suggest meal timing adjustments for better energy levels ## SAAS BUSINESS MODEL ### Subscription Tiers - **Free Tier**: - 3 meal plans per month - Basic food logging (50 entries/month) - 5 photo analyses per month - Standard recipes - **Premium Tier ($9.99/month or $79.99/year)**: - Unlimited meal plans - Unlimited food logging - Unlimited photo analyses - Advanced AI customization - Priority recipe generation - Detailed micronutrient tracking - Export meal plans to PDF - Early access to new features - **Pro Tier ($19.99/month)**: - Everything in Premium - Multi-goal tracking (e.g., train for marathon + lose weight) - Integration with fitness trackers (Apple Health, Fitbit, Garmin) - Personalized supplement recommendations - Access to nutritionist chatbot - Custom meal plans for family members (up to 5 profiles) ### Payment Integration - Stripe integration for subscription billing - Support for monthly and annual plans - Free trial: 14 days of Premium features - Automatic renewal with email reminders - Cancellation flow with retention offers ## TECHNICAL ARCHITECTURE ### Frontend - Next.js 14 with App Router - Tailwind CSS for styling (mobile-first, responsive design) - Framer Motion for smooth animations - React Hook Form for form handling - Zustand or Context API for state management ### Backend - FastAPI (Python) or Next.js API Routes - PostgreSQL database with Prisma ORM - Multi-tenant schema: each user's data is isolated - Redis for caching and session management - JWT-based authentication ### AI Integration - OpenAI GPT-4o or Gemini API for meal planning and recipe generation - Vision model for food photo analysis (GPT-4 Vision or Claude Vision) - Fine-tune prompts for nutrition-specific tasks - Implement fallback logic if AI fails ### Database Schema - Users table (id, email, password_hash, profile data, subscription_tier, stripe_customer_id) - MealPlans table (id, user_id, plan_name, start_date, end_date, total_calories) - Meals table (id, meal_plan_id, meal_type, recipe_name, ingredients, instructions, nutrition_data) - FoodLogs table (id, user_id, food_name, calories, macros, timestamp, source) - Photos table (id, user_id, image_url, ai_analysis, confidence_score, corrected_data) - Recipes table (id, user_id, recipe_name, ingredients, instructions, nutrition, is_favorite) - Subscriptions table (id, user_id, stripe_subscription_id, status, current_period_end) ### Security & Compliance - HTTPS everywhere - Password hashing with bcrypt - Rate limiting on API endpoints - GDPR-compliant data handling - End-to-end encryption for sensitive data - Regular security audits - Clear privacy policy and terms of service ### DevOps & Deployment - Vercel for frontend hosting - Railway or Supabase for backend + database - GitHub Actions for CI/CD - Environment variables for API keys - Monitoring with Sentry or LogRocket - Automated backups of database ## UI/UX DESIGN ### Landing Page - Hero section with value proposition: "Your AI Nutritionist in Your Pocket" - Feature highlights with icons - How it works (3-step process) - Pricing table (Free, Premium, Pro) - Testimonials (placeholder for now) - FAQ section - CTA buttons: "Start Free Trial" and "Learn More" ### Dashboard - Clean, minimalist design with card-based layout - Sidebar navigation: Dashboard, Meal Plans, Food Log, Photos, Recipes, Settings - Top bar with user profile, notifications, subscription status - Quick stats cards: Today's calories, macros, water, weight trend - Interactive charts with Chart.js or Recharts - Dark mode toggle ### Mobile Responsiveness - Fully responsive design (mobile-first approach) - Bottom navigation for mobile users - Touch-friendly buttons and forms - Optimized image loading for slower connections ## MONETIZATION & GROWTH ### Revenue Streams - Subscription fees (primary) - Affiliate partnerships with healthy food brands - Sponsored recipes from food companies - White-label version for gyms/corporate wellness programs ### Growth Features - Referral program: "Invite 3 friends, get 1 month free" - Social sharing: "Share your meal plan" with branded images - Blog with SEO-optimized nutrition content - Email newsletter with weekly tips and meal ideas - Integration partnerships with fitness apps ### Analytics - Track user engagement: daily active users, meal plan generation rate, photo uploads - Conversion funnel: signup → free trial → paid subscription - Churn rate monitoring - A/B testing for pricing and features - Heatmaps for UX optimization (Hotjar or similar) ## DELIVERABLES Generate the complete codebase including: 1. Full Next.js frontend with all pages and components 2. Backend API with authentication and database integration 3. Stripe payment integration 4. AI meal planning and photo analysis implementation 5. Responsive, production-ready UI 6. Database schema and migrations 7. Environment variable setup instructions 8. Deployment guide for Vercel + Railway 9. README with setup, development, and scaling instructions Make the app production-ready, scalable, and visually polished with a modern, clean aesthetic. Prioritize user experience and performance.